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Old 08-13-2010, 11:56 AM   #12
MaroSS
ZL1
 
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Drives: 10' SS/RS - Sold; 15' White ZL1
Join Date: May 2009
Location: Harbor City, CA
Posts: 683
Same here no codes with my High Flow Cats and I also have Noweeds Diverters and no Tune. The fitment is horrible tho but in your case i think you should put back on the stock cats and see what happens.
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